<template>
	<view class="cart-container" v-if="cart.length !== 0">
		
		<my-address></my-address>
		
		<!-- 购物车商品列表的标题区域 -->
		<view class="cart-title">
		  <!-- 左侧的图标 -->
		  <uni-icons type="shop" size="18"></uni-icons>
		  <!-- 描述文本 -->
		  <text class="cart-title-text">购物车</text>
		</view>
		
		
		<!-- 商品列表区域 -->
<!-- 		<block v-for="(goods, i) in cart" :key="goods.goods_id">
			<my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>
		</block> -->
		
		
		<!-- 商品列表区域 -->
		<!-- uni-swipe-action 是最外层包裹性质的容器 -->
		<uni-swipe-action>
		  <block v-for="(goods, i) in cart" :key="i">
		    <!-- uni-swipe-action-item 可以为其子节点提供滑动操作的效果。需要通过 options 属性来指定操作按钮的配置信息 -->
		    <uni-swipe-action-item :options="options" @click="swipeActionClickHandler(goods)">
		      <my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>
		    </uni-swipe-action-item>
		  </block>
		</uni-swipe-action>
		
		<!-- 结算区域 -->
		<my-settle></my-settle>
	</view>
	
	
	<!-- 空白购物车区域 -->
	<view class="empty-cart" v-else>
	    <image src="/static/cart_empty@2x.png" class="empty-img"></image>
	    <text class="tip-text">空空如也~</text>
	</view>
	
	
	
</template>

<script>
	// 导入自己封装的 mixin 模块
	import badgeMix from '@/mixins/tabbar-badge.js'
	import {mapState,mapMutations} from 'vuex'
	export default {
		mixins : [badgeMix],
		data() {
			return {
				options: [{
					text: '删除', // 显示的文本内容
					style: {
						backgroundColor: '#C00000' // 按钮的背景颜色
					}
				}]
			};
		},
		computed : {
			...mapState('m_cart' , ['cart'])
		},
		methods : {
			...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById']),
			// 商品的勾选状态发生了变化
			radioChangeHandler(e){
				this.updateGoodsState(e)
			},
			// 商品的数量发生了变化
			numberChangeHandler(e){
				this.updateGoodsCount(e)
			},
			swipeActionClickHandler(goods){
				uni.showModal({
					title: '提示',
					content: '是否确认删除?',
					success:  res => {
						if (res.confirm) {
							console.log('用户点击确定');
							this.removeGoodsById(goods.goods_id)
						} else if (res.cancel) {
							console.log('用户点击取消');
						}
					}
				});
				
			}
		}
	}
</script>

<style lang="scss">
.cart-container{
	padding-bottom: 100rpx;
}	
.cart-title{
	height: 80rpx;
	display: flex;
	align-items: center;
	padding-left: 10rpx;
	border-bottom: 1px solid #efefef;
	
	.cart-title-text{
		font-size: 28rpx;
		margin-left: 20rpx;
	}
}

.empty-cart{
	display: flex;
	flex-direction: column;
	align-items: center;
	padding-top: 300rpx;
	
	.empty-img{
		width: 180rpx;
		height: 180rpx;
	}
	.tip-text{
		font-size: 24rpx;
		color : gray;
		margin-top: 30rpx;
	}
}
</style>
